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- 1. Multiple Choice
a substance with a pH greater than 7; will increase the concentration of hydroxide ions in solution
acid
base
neutral
- 2. Multiple Choice
a change from one state of matter (solid, liquid, gas) to another without a change in chemical composition
chemical change
physical change
phase change
chemical reaction
- 3. Multiple Choice
the number placed in front of a chemical formula to indicates the number of molecules present
subscript
superscript
coefficient
- 4. Multiple Choice
interaction between molecules that causes a chemical change, converting an existing substance into a new substance
chemical change
physical change
phase change
chemical reaction
- 5. Multiple Choice
a symbol, usually a letter or a number, placed immediately below and to the right of a written character
subscript
superscript
coefficient
- 6. Multiple Choice
a reaction in which one atom or ion in a compound is replaced by another atom or ion
single-replacement reactions
double-replacement reactions
acid-base reaction
synthesis reaction
- 7. Multiple Choice
a substance that has a pH below 7; will increase the concentration of hydrogen ions in solution
acid
base
neutral
- 8. Multiple Choice
an ionic substance (H3O+) formed when a water molecule combines with a hydrogen ion
hydroxide ion
hydronium ion
cation
anion
- 9. Multiple Choice
the substances present before a chemical reaction occurs; in a chemical reaction the arrow usually points away from the reactant(s)
reactant
product
compound
molecule
- 10. Multiple Choice
a chemical reaction between two compounds where the cations in two compounds switch the anions they are bonded to, resulting in two new compounds
single-replacement reaction
double-replacement reaction
acid-base reaction
synthesis
- 11. Multiple Choice
a reaction in which two or more elements or compounds combine to form a more complex compound
acid-base reaction
neutralization reaction
synthesis reaction
decomposition reaction
- 12. Multiple Choice
a reaction in which a substance reacts with oxygen gas to produce carbon dioxide, water, and heat
acid-base reaction
neutralization reaction
synthesis reaction
combustion reaction
- 13. Multiple Choice
the substances that are formed during a chemical reaction; in a chemical reaction the arrows point toward the product
product
reactant
compound
molecule
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